Edwaed weston



B. WESTON. Rotating Armature for Dynamo Electric Machine.

No. 234,443. Patented Nov. 16, I880.

N. PETERS, PHOYO LITNOGRAPHERI WASH HGTGN D C UNITED STATES PATENT OFFICE.

EDWARD WESTON,'OF NEWARK, NEW JERSEY, ASSIGNOR TO WESTON DY NAMO ELECTRIC MACHINE COMPANY, OF SAME. PLACE.

ROTATING ARMATURE FOR DYNAMO-ELECTRIC MACHINES.

SPECIFICATION forming part of Letters Patent No. 234,448, dated November 16, 1880.

Application filed February 18, 1878.

To all whom it may concern: electric machine. Fig. 2 is a central longi- Be it known that I, EDWARD TESTON, of tudinal section. Newark, New Jersey, have invented certain The distinctive characteristic of the carrier Improvements in Rotating Armatures for Dyor shell A upon which the coils B are wound 5 namo-Electric Machines, of which the followis, that it contains an interior chamber, C, ing is a specification. (Case B.) which is provided with an opening, 0, in each My improvements relate to the construcend and systems of openings in its periphtion of the cores or carriers for the rotating ery. The several coils upon the carrier are 60 coils in a dynamo-electric machine; and my separated from each other by the outwardly- IO invention consists, first, in making such cores projecting ribs (1. It will be seen that the or carriers hollow and with open ends; and, holes 0 extend radially through the ribs. The secondly, in providing a hollow or an annular shell A is secured by the ribs to the concave core or carrier with systems of openings in its sides of the disks A A, which are affixed to 6 periphery, whereby when such carrier or core the shaft a, carrying a commutator, D, the

is rotated air is drawn into the interior space several strips of which are suitably connected in the core or carrier and discharged therewith the coils I The shaft (0 is mounted in from tangentially through the holes in its pesuitable bearings, and is provided with a pulriphery. ley, A for the reception of a driving-belt. 70

By my invention 1 utilize the rotation of the The commutator, driving pulley, and bearings armature for the establishment by centrifugal for the shaft a are such asare usuallyeinployed action of powerful currents of air, which not in dynamo-electric machines. only tend to keep the rotating armature cool, \Vh'en the carrieris rotated air will be driven but tend to cool the contiguous portions otthe by centrifugal force out of the holes 0 in its pe- 7 machine. riphery, and the place of such air will be sup- As my presentinvention relates solely to the plied by air entering through the holes 0 in the construction of the core or carrier for the roends, the direction of the current being shown tating coils, and as the use of rotating coilsin by arrows in Fig. 2. The strong current of air dynamo-electric machines is well known, I do thus established through the hollow carrieror not deem it necessary to describe any particushell A not only cools the carrier, but tends 3o lar dynamoelectric machine. to cool the contiguous portions ofthe machine.

My present invention will be found useful It will, of course, be seen that my invention in any dynamo-electric machine, irrespective is applicable to a Pacinnotti armature, or to of the number of external magnets employed anyother armature in the form of an annulus, 8 and irrespective of themode of connecting the by providing such armature with openings 5 coils of such machines in an electric circuit. from its interior outward to its periphery.

The rotating coils of dynamo-electric ma- I claim as my invention chines havebeen usually heretofore wound 1. In a dynamo-electric machine, a rotating upon an iron core, and cores so wound are armature the coils of which are wound upon a called armatures, but in another applicahollow core provided with openings in its ends 40 tion which I have made for a patent (now and in its periphery, substantially as and (or pending) l have described rotating coils wound the purpose set forth. upon a carrier composed of a non-conducting 2. In a dynamo-electric machine, a rotating or diamagnetic material in the form of a 1101- armature consisting of a series of coils wound 10w cylinder. I therefore wish to have it unupon the hollow carrier or shell A, which is 45 derstood that my present invention is applicaprovided with openings 0 in its ends and openble, not only to armatures, so called, but to ings c in its periphery, as and for the purpose all metallic carriers for rotating coils. set forth.

The accompanying drawings, representing i "1' I) i a rotating armature or carrier for a rotating \VDSTOL 5o coil, are as follows: W 1tnesses:

Figure l is an isometrical perspective of an JOHN O'r'ro,

.armature adapted to be rotated in a dynamo- JOHN C. YOUNG. 

